“FV-50 & FH-50 Have a Sony CX110 using FV-50 and a Sony HX200V using FH-50. Since I'm using extended batteries on the CX110( FV-100), I'd like to use the FV-50 as a spare on the HX200V. That ok ? Also has an external charger for the FV series. Can that be used to charge the FH as well, or should I rather charge the FH via the camera, as per default ?”